schumacher



J. SCHUMACHER.

MACHINE FOR MAKING PLASTER BOARD.

APPLICATION FILED JAN. 23, m9.

l 35 1 ,264. Patented Aug. 31, 1920.

3 SHEETS-SHEET 1.

r By l w@ J. SCHUMACHER. MACHINE FOR MAKING PLASTER BOARD. APPLICATION min 1Au.23. was.

1, 35 1 ,264, Patented Aug. 31, 1920.

JA SCHUMAUHER.

MACHINE FOR MAKING PLASTER BOARD.

APPLICAHUN FILED mzs. :919.

1, 35 l ,264. Patented Allg. 31, 1920.

3 SHETS-SHEET 3.

Ii NN d l W u J BAT/ENT p OFFICE.

Jenn soirs-nnonne.,Y or'nosnncnm's, sername.

MACHINE FOR PLASTERBOARD.

Siaeenation of Letters Patent.

Patented Aug. 31, 19210.

Application led'l'nmmry sa. 1819. Serial No. 278,785.

To all 'whom t mog/concern.'

Be it known that l, Jorin- ScHUMs'onnn, e citizen of thollnited States residing utLos Angeles in the county of fics Angeles sind State of, Culiorniuf-heve invented newy and useful Improvements in Machines -for Mukg Plaster-Bom-of which the following is o s' ecification.

his invention relates to machines Jfor making plnsterbonrd, and morepnrticnlnrly to apparatus for perform-.ing sheets of plastcrhoixrd so that it muy form the function of luth in holdngsnd supporting plasterV or wall materiel; the peromtious-or openings in the plosterboard accommodating inves sions of such plaster or well material to key or hind or interlock the plaster or well iiisteriel to thc plasterbonrd. In another e plicstion 'for Letters Potent Filed by Josep E. Schumacher onctoher-Qth, 191i, for n. peru-tus for manufacturing histerboin'cl, e- Vriul No. 195,661, :incl :illoive November 12th, i918, and resulting in Letters vIsittent issued disclosed u combinstion of features cepu.V

ci pertorutingV olusterbperd, either under the direction an operation of honclfor mofrhiner L Likewise, in seid Letters Patent, the p asterbourd product resultant upon :zo such perforation operation is disclosed.

The resent invention has to do with mochines or turningout such perforated plusterhoard, and utilizing the invention clis-V ciosecl und' claimed in seid Letters Patent.

The invention hais; for its objectsthe provisionof u. suitable machine of the general character statedl which will be superior in point of relative simplicity and inexpensivenes's considered conjolntly with posltiveness und reliability fin o eration, conveniencein use und controlbreliability and speed in ection und durobility, und which will he gencrelly superior ediciency. and service nbility.

Essentiel und particular. objects to be sttsined in the o ration of .u machine of this character will e resdil gleaned from reference to Vseid issued*V y tters Potent, and, briey, it may: b. .pointed out that .1norderV to preperefplasterbosrd'or service and. use, particularly in that it mayproperly support und einstein a plaster coating or wall material applied to it, the plasterboord must be punctured so es to properly receive the m December 3rd, 1918, Serial N 1,286,802.12?,

surface 1n registering trading` well materiel or plaster and produce the most eicient inter-lock oi the board undwullmnterinl. To this end, in dealing with lssterhourd consisting, ss it usually does, in the best forms, or' hardened plastic materiel having. surface sheets of peper or the:like,it is found preferable to puncture the board elegir.` through,l butnot to remove or tesrawuy the paper sheet which is at the 'side of the plssterboercl 4which ultimately will be fiirthest removed from the point of invasion by the well materiel.y It is desirable to louve the paper at, the perforation punctured or broken, but not vtorn away, so thutit muy eventually take theffor'm of overlsp ing iingersor tongues ot peper which 'wi to Vu certain extent seul up one end of the perforation, and thus prevent sin overinvasionY ofthe perforation by YWell materiel, nlsoserviug to interlock with the invading tongue orfkey `of woll material andgcause a. strong Vbinding inter-relation between the wnll materiel nml the boord, :md also to :1p-

end of the key or tongue of Woll material and prevent its discolorstion'iby dust und other particles which tends to produce u dark appearance upon the wnll orceiling with such key or tongue. Thus in practising theinventiom provide n com ination of dlelmembers und punches, or nsingle die Vund punch, `which -w'ill in operation, produce struc :incl clean perforation of one surfaci of the peper on the plasterboord, which wi produce, o clean und cleared hole through the plaster-board body, und which will merely rupture and not tear sway or remove the vpaper et the other fece of the boord.

The present nrentionconssts in the novel and. useful -nrovisom formation, combinetion, inter-rc ation and relative arrangement und association of parts, members und features ell as hereinafter described, shown in the drawings, and finally pointed out in claims.

In the drawings:

Figure 1 is n. front elevation, partly broken away, of u machine for making or finishing plusterboard constructed and orgnnized to embody the invention;

Fig. 2. is n. detail longitudinal sectional View of the same, teken upon the lineV :n-w, Fig. l;

Vproximutely cover up Athe outer cud or free Fig. 3 is an end elevation of the machine looking in the direction of the large arrow 3 at the right hand end of Fig. l;

Fi 4 is an enlarged view of a portion of the s owing in Fig. 2;-

Fig. 5 is a fragmentary view similar to Fig. 4, illustrating the results of further steps in the operation of the machine than that illustrated in Fig. 4; and

Fig. 6 is a fragmentary view similar to Fig. 4 showing a modified form of construction and or anization.

Correspon ing parts in all the figures are designated by the same reference characters.

Referring with particularity to the drawings, the improved machine therein shown comprises in the main a bed plate A across which sheets of plasterboard B are successively passed, and at and upon which bed plate such lasterboard is subjected to several operations including that of a punch member C, and those of such bed plate, which is provided with recessed formations b and a dat formation c, to which the plasterboard sheets are successively advanced, and by which the tongue or fingers of pa er or facing at one face-of the plasterboarc B are so affected or bent back toward the plane of the respective surfacing as to bring them into close relation to substantially seal the respective ends of the perforation which they overlie. The plaster-board is advanced across the bedlplate A by two op osed series of rollers, and E, respectiv y, which are intermittentl actuated through oper ating means d. he bed plate A is mounted to be verticall reciproccted, by actuating means f, and t e punch member C is vertically reciprocated by actuating means g. It will be understood that the bed plate is mounted in a suitable frame F, having suitable members to support, guide and accommodate the working features of the machine` and which need not be discussed in detail, as they will be apparent from the drawing and their construction would readily suggest itself to any person skilled in the art. The punch member `C is guided in cross heads 7 supported by uprlghts 9. The

punch member 1s mounted upon a beam 9" which ranges transversely of the machine and at its ends is received loosely in connecting rods 9* and guided by vertical rods 9 playing in vhearings 91 in the arms 7. The mnnectiug rods 9 carry at their lower ends each an eccentric strap 9" applied to a separate eccentric 9t upon the main shaft 12, at the respective ends thereof, whereby rotation of such main shaft causes vertical reciprocation of the punch member C. The bed plate is mounted u on vertical forked end supports 10, each o which straddl a cam I11`1ncluding in the operating means f and which is fast upon a main shaft 12 journalcd in the frame. A roller 13 is mounted in connection with each of the supports 10 and co-acts with the respective cams l1, so that upon rotation of the shaft 12 the bed plate is reciprocated vertically.

The members D and E comprise separate series of rollers 14 and 15 fixed respectively upon transverse shafts 14 and 15" which are journaledin the frame F and provided at both ends with inter-meshing gears 14 and 15" so that such shafts with their rollers turn opsositely to grip and advance the plasterboar sheets B across the bed late A toward the front of the machine. referably the two series of rollers 14 and 15, with corresponding shafts D and E, are duplicated at the rear of the machine, so that the plasterboard is gripped and forced for wardly across the bed plate by such supple' mental rollers thus assisting the draw or pull of the rollersl 14 and 15 at the front of the machine. Likewise, these rear shafts D and E have intermeshing gears 14" and 15 corresponding to the corresponding forward shafts.

The means e for operating the shafts 14 andV 15, with their rollers, comprise a sprocket wheel 16 fast upon the lower forward shaft E and a sprocket Wheel 16 fast n on the lower rear shaft E. The sprocket w eels 16 are rotatably united by a s rocket chain 17, so that the two forward s afts D and E are suitably rotated in unison with Vthe two rear shafts D and E. In order to so rotate these shafts the means e includes a ratchet wheel 18 fast upon the lower rear shaft E and a pawl 19 pivoted upon a loose Julley 20 centered upon the rear shaft E.

assed about such tpulley 20 is a strap or band 21, one end o which is connected by a tension take-up 22 with the frame F, and the other end of which is adjustably connected, by with a swinging arm 24 pivoted at its u )per end, as at 25, in connection with one o the arms 7. This arm 24 is provided at its lower end with a roller 26 which co-acts with a cam member 2T mounted upon a ily wheel 2S which, in turn, is lixed upon the main shaft 12. Asthe cam member 27 performs. it rocks the arm 24 which puts the belt or band or strap 2l under strain at one end, causing the pulley 20 to erform a part rotation and thus causing tie pawl 19 to impart a part rotation to the ratchet wheel 18 fast upon the shaft E.

Referring to the form of construction shown in Fig. 6, the bed plate A is shown at right at its bottom with telescopic tubing 29 to one end of which is applied a power fonti() which serves to suck frorn'tho openings 31 in the bed plate, which openings receive the unch fingers 32 upon the punch member any accumulated dirt, punchngs or accumulations incident to the punching operation, thus thoroughly scavenging such a pin and hole connection 23,A

openings, which are shown as of greater di ameter than the outsidev diameter of the punch lingers or prongs 32.

The bed plate A is provided with a. series of recesses 33, in its upper surface7 and these recesses are arranged just forward of the die holes 31 in the bed plate A. And forward of such series of recesses 33 the bed plate is provided with a flat or plane upper surface. The plasterhoard after its perforation passes successively over these' portions of the top of the hed plate, for reasons hereinafter to he set forth, and in order to scavenge such recesses 33 and remove therefrom an pos sihle accumulations of punehins or tirt or substance which might gather, provide, as shown in Fig. 6, a scavenging chamber 34 in the hed plate A with which register duets 35 in the hed plate, such ducts in turn opening at their upper ends into the recesses 33. Telescopic piping 36 extends from said shave cnging clunnlier 34 to a power {bleu-er 3i whereby air currents may hc forced through the scavenging chamber 34 and the ducts 535 and partly through the recesses 33to clear .such recesses of any accumulations.

Vln the operation of the machine, the plas'- tcrboard is advanced across the hed platelet. by the two double series of rollers D and E, at rear and front of the machine,such rollers being intermittently turned by the means c, including the sprocket chains l?, sprocket wheels lli, arm ll. cam 2T. strap 2l. pulley 2o, pawi l'r thereon, and ratchet wheel 1S on the rear shaft lil. ftcr each intermittent advance of tlnplasterbmird. the bed plate A, with its die openings 31, is raised by the means y', including the cams l1 and rollers 13, and is brought into the position shown in the drawings. VThereupon the means g, including the ccccntrics El* and straps Si" thereof. and connecting rods 5), cause the punch member C to bc lowered and its punch lingers or prongs` EL to be passed through and pcri'oratc the plastcrlunird, so as to cleanly cut away the upper surfaring sheet 3S, cut u clean liolc through tbc body 39 of the plasterboard, and disrupt the lower surfacing lli so as to turn tbe lingers of such covering downwardly. as at ll. rllhcreupon the bed plate A is lowered by tbc operating means ,F and the punch member (l is elevated by the means y, and the rollers l) and E again advance the pnnctured plastcrboard, until the pnncturcs Vl? therein are brought over the recesses 323 in the hcd plate A. Thereupon tbe operating means f elevate the bed plate and the lingers -ll ol' tbc lower Vilastcrboard covering l0 are engaged by the lud plate at the recess Ril tbcrcin and turned or lient inwardly and upwardly into overlapping relation so as to approximately seal or cover tbc lower oriliccs ol thii bolos l2, ow means y; operate to productA an other punching opcmtion through fresh porover from the recesses lill in the surface portions l) of the bed plate onto tbe smooth flat surface portions c ot' the bed plate so that such returned or partlyfolding fingers 4l of the lower covering ot' the plasterboa-rd are more effectively flattenedpout or restored to the plane in which such punctured portion of the covering originally extended. These successive operations are clearly indicated in Fig. 5, the fingers being finally folded up approximately flat as at the cxtreme left of this figure.

It is manifest that many changes ambra riations may be made in practising the invention, in departure from the specific disclosure of the foregoing description. and tbe drawing.

Having thus disclosed m invention. l

claim and desire to securfby cttcrs Patent l. A machine for perforating plaster board and like products of that type which comprise a plastic filler interposed between cover Sheets, includingr a die member. a punch member mounted for cooperation with the` die member to form openings through fthe plaster board and leave one of the cover sheets in a torn condition at the openings` means for advancing the laster board be tween the dic member and) punch member, and means for subsequently restoring tbc torn portions of the said cover sheet to substantially their original positions.

2. machine for perforating plaster board and like products of that type which comprise a plastic filler interposed between the cover sheets, including a die member. a punch member mounted for cooperation with the die member to tormopenings in the plaster board and leave one of the cover sheets in a torn condition at the opening, means for advancing tbc plaster board bctwccn (be die member and punch member. and pneumatic means for removing dust and debris from the openings.

El. A machine for perforating plaster boa rd and the like` including :L die memher.l a cooperating punch member, means for intermittently advancing the plaster hoard botwccn the die member and the punch member, and means for causing the die member and punch member to operate upon the plaster board during the periods` when tho .same is at rest, the die member being formed with a recessed surface portion over which the plaster board is :nlvanccd after l.y ing puncturcd. and also with a` flat surface, portion over which thc plaster board is ad vani-cd subsequent to its movement over such recessed portion.

l. machine for perforating plaster board and the like of that type which comprocsl a plastic iller interposed between cover sheets, including a die member, a

pnnch ineniber nionntcd for cooperation ith thc die nicmhcr to forni openingsv through the pla tcr hoard and leave one ol. the cin-cr alici-t in a torn condition at the opening"` nican l'or :nlvancinn thc plaster hoard between the die nlcnibcr and punch member. and nimma in thc path oiI the pla` ter hoard lor restoring; the torn portions. ol the cover .dieet to ttlhtantiallv their original positions.

machinel ol` the cha 'at-ter discloaed. compriainrr menne for advancing plastern hoard. a die nacinbcr over which it is ad` minced. and a pnnch member for pertoi'atniter the plastcrhoard. the dic member being provided with a recessedsurface portion over which the plnstcrhoard is advanced aftcr heiner puncturcd; incam` being provided for withdrawingr l'roin xaaid recessed portion of imid die member any accnnndationq oiw pnnchingor the like,

tt. machine of the character disclosed. coinprihing means for advancing plat-iterboard. a die member over which it is advanced. and a punch member for perforat ing;A the plastcrlmard, the die member being provided with a recessed surface portion over which the plaster-hoard is advanced after beingr punctnred; means being provided for \\itlnlra\vin`elr from said reeeased portion: of said dic member any accumulations of punching or the like; said laat name n1can compi-initie' a device for passing air currentthrough said recessed portion of the die member.

i'. A\ machine of the character disclosed, comprising means for advancinpr pla terboard. :l die lncnibcr over which it is ad vanccd. and a punch member l'or perfor-.1b in; thc pla tcr|mard` the die member being prmidctl n ith a recessed `airfare portion ow wbif-li tbc plastcrhoard is advanced after man pioalnred; means being provided l'or lwziwugjiiijb! the die member both at' the pnncb iwfivine portion and the revivant portion tluicol'i S. v.\ machine 'for perforating plaster beard and thc like ot' that type which cone pri-cf- :a plafti': tiller interposed between cover dicen. includinga dienicinbeiza punch nicndcr mounted i'or cooperation with the die member io form openinga in the plaster hoard and leave one of the cover Idirete in .-i torn condition at the opening', means` for advancing the plaster board between the die incmbcr and punch member, pneumatic ineana l'or removingr dust and debris from thc openings. and means in the, path of the plaftcr board for restoring the torn portions ol' the cover sheet to substantially their original positions.

t. ln a machine of the character disclosed, mcani-` for punching a perforation through a hcct of plaaterhoard comprising body material and a Iurlare covering and whereby the 4anrtace covering is disrupted but not de tachcd. and meana` for foldingl inwardlyv over one end of the perforation the ruptured portion ot' auch covering; said last named in ans comprising a plate over which the plaster board is passed and which i5 provided with a recessed portion and with a plane portion.

1t?. In a machine of the character di clowd. a die member. a punch member, and means for advancing p-lantcrlmard over the die member; Said lneana4 comprising co-actiijxg shafts provided with rollers adapted to grip and move the plasterbmird. a drive sl'tai't. a swinging arm. a cani upon the drive shaft for oscillatin; r the said arm, a pulley lume upon one ot' said lirst mentioned shafts. and a ratchet -fat upon the eamo alla l't and with which a pawl carried by said phllev cooperates. and said pa wl.

In testimony whereof. l have Signed my nime to this simcilication in the presence ot' two subscribing` witnesses.

JOHN SCUUMACHER.

lill 

